—To tell you the truth, you ______ to win the first prize in the competition.—Sorry for having let you down.[ ]

Mr. Smith asked Nancy ____ it took her to fly to New York. [ ]

n you speak English so fluently —Oh, I________ English in ShanghaiInternational Studies University for four years.

________on a clear day，far from the city crowds，the mountains give him a sense of peace

The book_________first aid is of great help to me.[ ]